Lock structure



M. C. MAXWELL LOCK STRUCTURE Oct. 16 1923. 1,470,858

Filed June 2. 1922 Patented Oct. 16, 1923.

UNITED STATES PATENT OFFICE.

MAXWELL C. MAXWELL, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE &TOWNE MANUFACTURING COMPANY, OF STAMFORD, CONNECTICUT.

LOCK STRUCTURE.

Application filed June 2,

To all whom it my concern:

Be it known that I, MAXWELL C. MAX- WELL, a citizen of the UnitedStates, and a resident of Stamfrd,in the county of Fairfield and StateofConnecticut, have invented certain new and useful Improvements in LockStructures; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates .to improvements in lock structures, andmoreparticularly to securing means for locks, especially those of thecylinder type, the object of the invention being to provide simple andefiicient means whereby a lock casing mounted in an opening in the woodof a door shall be securely held in place, and the securing means befirmly and effectually held against displacement in an opening in thedoor at right angles to the wall of the cylinder lock casing.

With this and other objects in view, the

invention consists in certain novel features of construction andcombinations of parts as hereinafter set forth and pointed out in theclaims.

In the accompanying drawings; Figure 1 is a view, partly in section andpartly in elevation of the sleeve or bushing which receives the securingset-screw for the lock casing; Figure 2 is an end view of the same;Figure 3 is a view in elevation of the sleeve or bushing with itsfingers bent inwardly to facilitate insertion into an opening in thedoor; Figure 4 is a sectional view showing the application of myimprovements in securing a lock casing in place in an opening in a door;Figure 5 is an enlarged sectional view, and Figures 6 and 7 are Viewsillustrating a modification.

In Figure 4 of the drawings, a fragmentary portion of a door isrepresented at 1 which may be made of wood and the same is provided withan opening 2 which receives a lock of the cylinder type as indicated at3.

A cylindrical bore or opening 4 is made in the door so as to extend fromthe edge face of the latter to the wall of the opening 2 and be disposedat right angles to the wall of the lock cylinder or casing in saidopening 2.

The bore 4 in the door receives a sleeve or bushing 5 and the latterserves as a mounting for a set screw 6 to engage the lock cylinder andsecure the latter in place in the opening 2 in the door.

The sleeve orbnshing 5 may conveniently be made from a section of tubingand is threaded interiorly near its rear end portion, as indicated at 7for the accommmlation of the threaded exterior portion 8 of the setscrew 6. The forward portion of the sleeve or bushing is made with aplurality of slots 9 open at one end'and forming a plurality of fingers10, each of which has punched from the metal thereof, two (more or less)lateral projections forming spurs or pointed teeth 11 to become embeddedin the wood of the door as indicated in F igure 4. I

Instead of making the Wood-engaging projections by punching pointedspurs from the metal of the sleeve or bushing fingers '10 as abovedescribed, the wood-engaging projections may be made in the form ofbeveled ribs 12 as shown In Flgures 5 and 6,

and these ribs may be segments of concentric rings or they may bearranged spirally to form, in effect, screw threads.

The sleeve or bushing 5 is made with an exterior knurled or otherwiseroughened portion as indicated at 13, so that it will be prevented fromturning in the bore at during the insertion of the set screw.

Before the sleeve or bushing is inserted into the bore 4 in the door,the fingers 10 will be bent inwardly so that the spurs or projectionsmay not interfere with the driving of said'sleeve or bushing into placein the bore 4 in the wood of the door. The set screw 6 will be insertedinto the sleeve or bushing and as said screw is turned and thus fedforwardly to engage the lock cylinder 3, it will engage the fingers 10and force them outwardly, causing the wood-em gaging projections orspurs to become cmbcdded in the wooden wall portion of the bore 4. Ifdesired, the leading end of the set screw may be beveled as indicated at14.

With my improvements, the metal mounting for the set screw will befirmly secured in the bore 4 inlthe wood of the door, and the set screwmay be made to engage the lock cylinder with sufiicient pressure tosecure the same rigidly and immovahly in place.

Various slight changes might be made in the details of construction ofmy invention without departing from the spirit thereof or limiting itsscope and hence I do not wish to restrict myself to the precise detailsherein set forth.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is

1. In lock securing means of the char acter described, the combinationwith a lock casing, of a sleeve or bushing having fingers provided withlaterally projecting wood-engaging means to engage the wall portion of abore in which said sleeve or bushing may be located, said sleeve orbushing having an internal threaded portion,

and a set screw to pass through said sleeve or bushing and engage thelock casing.

52. In a lock structure of the character described, the combination witha lock casing, of an internally threaded sleeve or bushing having aplurality of fingers, said fingers having laterally projectingwood-engaging members, and a set screw to enter said sleeve or bushingand engage the lock casing, said set screw being cooperable with saidfingers to force them laterally and embed said laterally projectingmembers into the wall of a bore in which said sleeve or bushing may belocated.

3. In a lock structure of the character described, the combination witha lock casing, of a sleeve or bushing to enter a bore in a Wooden partin which latter the lock casing may be located, said sleeve having aseries of fingers provided with laterally projecting punched spurs and aset screw to pass through said sleeve or bushing and engage the lockcasing, said set screw being cooperable with said fingers to force themlaterally and embed said spurs in the wall of the bore in which saidsleeve or bushing may be located.

4. In a lock structure, the combination with a lock casing, of a sleeveor bushing to enter a bore in a wooden part in which latter the lockcasing may be located, said sleeve being internally threadediand havinga plurality of fingers provided With wood engaging members, said sleeveor bushing also having an externally roughened portion, and a set screwto pass through said sleeve or bushing and enga e the lock casing.

In testimony whereof, l have signed this specification in the presenceof two subscribing witnesses.

MAXWELL C. MAXWELL.

Witnesses:

L. M. SAISFIELD, CHARLES A. BERRY.

